Method for preparing different tones of indigo pigments based on blueberry leaves

A technology of black rice leaves and indigo pigment, which is applied in the field of natural plant pigment preparation, can solve the problems of limited color selection, poor water solubility of blue pigment, and imperfect preparation method, etc., and achieves good stability and nutrition, Good purification effect and good impurity removal effect
CN109097413AActive Publication Date: 2018-12-28JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2018-12-28

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Abstract

The invention discloses a method for preparing different tones of indigo pigments based on blueberry leaves. The method comprises the steps that blueberry leaves are used as raw materials, and different tones of indigo pigments are prepared by extracting and purifying pigments in the blueberry leaves and through reaction with multiple amino acids under the effect of glucosaccharase. The preparation method comprises the following steps of raw material drying and powdering, preparation of an enzyme buffer solution, water extraction pretreatment, filtration, blueberry leaf pigment crude extract purification, drying and concentration, enzymolysis for blue turning and finished product obtaining. By adopting the obtained natural indigo pigments, the product quality is stable, the safety is good,and the product has a better nutrition value. According to the types and use amounts of the added amino acids, different tones of indigo pigments can be prepared.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of natural plant pigments, and in particular relates to a method for preparing indigo pigments of different hues based on the leaves of the black rice tree. Background technique

[0002] Vaccinium bracteatum Thunb. is an evergreen plant of Rhododendronaceae Vaccinium. Its wild resources are widely distributed in my country, especially in Jiangsu, Zhejiang and Fujian. The nutritional value of black rice tree leaves and their fruits is very high. It is a custom in Jiangsu, Zhejiang and Fujian to make black rice with black rice leaves and fruits. Contain abundant polysaccharide and flavonoid compound in the leaf of black rice tree, also contain nutritional labelings such as multiple fatty acids, amino acid and vitamin simultaneously. Among its main components, carbohydrates account for 52.10%, and the content of flavonoids is about 19.48% (of which quercetin accounts for 35.71%). In recent year...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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